Flash Harry Wonder Fill Filler in a 5-liter container is a high-performance filler designed for larger-scale repairs and surface preparation. Ideal for use on walls, ceilings, and wood, this filler effectively fills cracks, holes, and imperfections, providing a smooth, even surface. It is easy to apply, sands to a fine finish, and offers durable, long-lasting results. The 5-liter size is perfect for extensive projects or frequent use, making it a convenient choice for both professional and DIY applications.